Svelte events are the way we add interactivity to components in Svelte. A common issue with Svelte events is adding arguments to functions called within them. For example, suppose we have a basic counter, which increases any time the user clicks on it:
HTML
<script>
// we write export let to say that this is a property
// that means we can change it later!
let x = 0;
const addToCounter = function() {
++x;
}
</script>
// we write export let to say that this is a property
// that means we can change it later!
let x = 0;
const addToCounter = function() {
++x;
}
</script>
<button id=”counter” on:click={addToCounter}>{x}</button>
This works fine, but let’s say we want to change it so that we increase the counter by a certain amount whenever it is clicked. We might try changing the code to something like this:
